For what man knoweth the things of a man, save the spirit of man which is in him? even so the things of God knoweth no man, but the Spirit of God.

Now we have received, not
the spirit of the world, but the spirit which is of God; that we might know the things that are freely given to us of God. spirit which is of GodRomans 8:15

Which things also we speak, not in the words which
man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.

But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned. manMatt 16:23can he knowRomans 8:5, Jude 19